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Device for filling a container with at least one type of powder material

a technology of powdered materials and containers, which is applied in the direction of solid materials, bottling operations, packaging under special atmospheric conditions, etc., can solve the problems of increasing the filling time, low apparent densities, and air presence that is likely to disturb the flow of powdery materials in the mould

Inactive Publication Date: 2012-02-14
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution achieves a more uniform and efficient filling process, reducing porosities and filling time, resulting in improved homogeneity and productivity, particularly beneficial for complex geometries and fine powders, similar to vacuum filling performance without the industrial constraints.

Problems solved by technology

However, it has appeared that the air present in the mould before filling is likely to render the filling non homogenous, at the origin of porosities in the moulded part, to lead to low and dispersed apparent densities, and increase filling time.
Furthermore, the presence of air is likely to disturb the flow of the powdery material in the mould.
However nothing is provided to overcome the problem of the air contained in the mould.

Method used

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  • Device for filling a container with at least one type of powder material
  • Device for filling a container with at least one type of powder material
  • Device for filling a container with at least one type of powder material

Examples

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first embodiment

[0034]In FIG. 1, a first example can be seen of a filling device according to this invention comprising a shoe 2 so-called a filling shoe intended to slide along arrow F on a table 4 wherein cavities 6 are made to be filled, for example moulds. The shoe comprises a filling channel 8 connected to a reserve of powdery material (not shown) by an upper end 7, channel 8 emerges in a lower part 10 or plate intended to be in contact with table 4, by an outlet opening 12 by which the powdery material flows into recipient 6.

[0035]According to this invention, the shoe also comprises means 14 allowing a pneumatic fluid contained in recipient 6, for example air to be evacuated from the recipient. In the example shown, means 14 comprise a first duct 16 intended to allow the evacuation of the air from the recipient 6 during filling, i.e. when the powdered material penetrates into the cavity.

[0036]The device also comprises advantageously a second evacuation duct 18 intended to allow the air to exi...

second embodiment

[0054]In FIGS. 6 and 7, a first example can be seen of a device according to this invention wherein the powdered material is distributed homogenously by the rotation of a part of the filling device.

[0055]The filling device according to the second embodiment comprises a cylindrical shell 101 intended to be positioned above a recipient to be filled (not shown) and forming a filling channel between a powder reservoir and the recipient. The device also comprises a means of distribution 100, positions in the filling channel and formed by a plate 103 of the X axis, intended to be put into rotation around this X axis. In the example shown, the disc is equipped on an upper face 102 with at least one distribution element 104 extending substantially radially on the plate, in the form of a small bar. Small bar 104 is intended to homogeneously distribute the powder carried by a hopper placed above the filling device (not shown). It is of course understood that element 104 can have any form adap...

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Abstract

A device for filling a recipient with at least one material in a form of a powder, the device including: a filling channel configured to bring the material from a reserve of material to an entry opening of the recipient; and a pump that evacuates a pneumatic fluid contained in the recipient through at least one first evacuation duct and a second evacuation duct, wherein the at least one first evacuation duct is configured to connect an inside of the recipient to an environment outside of the recipient during a filling phase, the first evacuation duct being internal to the filling channel, and the second evacuation duct is configured to evacuate the pneumatic fluid before filling.

Description

TECHNICAL FIELD AND PRIOR ART[0001]This invention relates mainly to a method for filling a recipient with at least one powdered material, and a device or implementing said method.[0002]The materials the form of powder are very numerous, for example washing powders, powdered milk or cement. In industry, materials in the form of powder intended to be put into form for example by sintering, by pressing, by pressing-sintering or by hot isostatic pressing are concerned. These are for example metallic or ceramic powders, or a mix of them. It is possible to obtain parts with very complex geometry.[0003]However, it has appeared that the air present in the mould before filling is likely to render the filling non homogenous, at the origin of porosities in the moulded part, to lead to low and dispersed apparent densities, and increase filling time. Furthermore, the presence of air is likely to disturb the flow of the powdery material in the mould.[0004]US 2003 / 0113222 discloses a device allowi...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B65B31/00
CPCB65B1/28
Inventor FEDERZONI, LUCREVIRAND, PASCAL
Owner COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES